Question

PLEASE HELP !

How many moles are in 22 grams of Argon ?

A
22 grams AR *----------------------- = ?
B

A= ?
B= ?

Answer 1

@chmvijay Can you help me , Again ? (:

Answer 2

Given mass = 22gms
M. Mass of Ar = 40gm
No. of moles = Wt. of given mass/M. Mass

Answer 3

grab a periodic table, and look up the molar mass of Ar. That will tell you how mcuh ONE mole should weigh, but you have something less than that. Use the molar mass as a conversion tool to convert mass to moles

Answer 4

40 gram of argon = 1mole of argon
22 gram of argon= 1mole of argon * 22 gram / 40 gram